Patents by Inventor Kien Yew Liang
Kien Yew Liang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8771430Abstract: A method for drying a workpiece using an apparatus comprising a liquid bath for immersing said workpiece, a deionized water supply for supplying deionized water to said bath, a partially enclosed volume of heated inert gas located above said liquid bath and a heated inert gas supply for supplying heated inert gas. A first holder is used for holding said workpiece in said liquid bath with a vertical orientation between the first holder and said liquid bath and a second holder, comprising a horizontal member, that is able to hold said at least one workpiece in such a way as to substantially prevent said workpiece from sliding along said horizontal member.Type: GrantFiled: September 17, 2013Date of Patent: July 8, 2014Assignee: Invenpro (M) SDN. BHD.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Publication number: 20140014135Abstract: A method for drying a workpiece using an apparatus comprising a liquid bath for immersing said workpiece, a deionized water supply for supplying deionized water to said bath, a partially enclosed volume of heated inert gas located above said liquid bath and a heated inert gas supply for supplying heated inert gas. A first holder is used for holding said workpiece in said liquid bath with a vertical orientation between the first holder and said liquid bath and a second holder, comprising a horizontal member, that is able to hold said at least one workpiece in such a way as to substantially prevent said workpiece from sliding along said horizontal member.Type: ApplicationFiled: September 17, 2013Publication date: January 16, 2014Applicant: INVENPRO (M) SDN. BHD.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Patent number: 8544482Abstract: An apparatus for drying a workpiece comprising a liquid bath for immersing said workpiece, a deionized water supply for supplying deionized water to said bath, a partially enclosed volume of heated inert gas located above said liquid bath and a heated inert gas supply for supplying heated inert gas. A first holder is used for holding said workpiece in said liquid bath with a vertical orientation between the first holder and said liquid bath and a second holder, comprising a horizontal member, that is able to hold said at least one workpiece in such a way as to substantially prevent said workpiece from sliding along said horizontal member.Type: GrantFiled: May 4, 2012Date of Patent: October 1, 2013Assignee: Invenpro (M) SDN. BHD.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Patent number: 8465595Abstract: An apparatus and method for cleaning workpieces (5) using two pairs of substantially vertical rotating roller brushes (15) at each brush station whereby rotation of said brushes (15) propel workpieces (5) from one brush station to the next. Workpieces (5) are held for a predetermined period of time at each station by edgewheels (30, 31) which also rotate the workpieces (5). Cleaning fluid is sprayed onto workpieces (5) as they rotate to assist in removing particulate contamination. Method involves inserting a single workpiece (5) in between two pairs of rotating roller brushes (15) which scrub said workpiece as it is rotated by a pair of edgewheels (30, 31). There may be a divider shield (9) in between each brush station to prevent a large proportion of particulate matter and use cleaning fluid from traveling between the brush stations.Type: GrantFiled: June 27, 2012Date of Patent: June 18, 2013Assignee: Invenpro (M) SDN. BHD.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Publication number: 20120324757Abstract: A method for drying workpieces includes immersing the workpieces in a liquid bath, raising the workpieces with a first holder until a central opening of the workpieces is visible above liquid surface, then using a dry second holder rod inserted through said central opening to continue raising process. Due to this, a drying portion of the workpiece is not held by a wet holding mechanism.Type: ApplicationFiled: September 4, 2012Publication date: December 27, 2012Applicant: INVENPRO (M) SDN. BHD.Inventors: Kae Jeng NG, Kien Hui LIANG, Kien Yew LIANG
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Patent number: 8302242Abstract: An apparatus and method for cleaning workpieces (5) using two pairs of substantially vertical rotating roller brushes (15) at each brush station whereby rotation of said brushes (15) propel workpieces (5) from one brush station to the next. Workpieces (5) are held for a predetermined period of time at each station by edgewheels (30, 31) which also rotate the workpieces (5). Cleaning fluid is sprayed onto workpieces (5) as they rotate to assist in removing particulate contamination. Method involves inserting a single workpiece (5) in between two pairs of rotating roller brushes (15) which scrub said workpiece as it is rotated by a pair of edgewheels (30, 31). There may be a divider shield (9) in between each brush station to prevent a large proportion of particulate matter and used cleaning fluid from traveling between the brush stations.Type: GrantFiled: April 18, 2008Date of Patent: November 6, 2012Assignee: Invenpro (M) SDN. BHD.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Publication number: 20120260940Abstract: An apparatus and method for cleaning workpieces (5) using two pairs of substantially vertical rotating roller brushes (15) at each brush station whereby rotation of said brushes (15) propel workpieces (5) from one brush station to the next. Workpieces (5) are held for a predetermined period of time at each station by edgewheels (30, 31) which also rotate the workpieces (5). Cleaning fluid is sprayed onto workpieces (5) as they rotate to assist in removing particulate contamination. Method involves inserting a single workpiece (5) in between two pairs of rotating roller brushes (15) which scrub said workpiece as it is rotated by a pair of edgewheels (30, 31). There may be a divider shield (9) in between each brush station to prevent a large proportion of particulate matter and use cleaning fluid from traveling between the brush stations.Type: ApplicationFiled: June 27, 2012Publication date: October 18, 2012Applicant: INVENPRO (M) SDN. BHD.Inventors: Kae Jeng NG, Kien Hui LIANG, Kien Yew LIANG
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Publication number: 20120255191Abstract: A method for drying workpieces includes immersing the workpieces in a liquid bath, raising the workpieces with a first holder until a central opening of the workpieces is visible above liquid surface, then using a dry second holder rod inserted through said central opening to continue raising process. Due to this, a drying portion of the workpieces is not held by a wet holding mechanism.Type: ApplicationFiled: May 4, 2012Publication date: October 11, 2012Applicant: INVENPRO (M) SDN. BHD.Inventors: Kae Jeng NG, Kien Hui LIANG, Kien Yew LIANG
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Patent number: 8257507Abstract: A method for drying workpieces includes immersing the workpieces in a liquid bath, raising the workpieces with a first holder until a central opening of the workpieces is visible above liquid surface, then using a dry second holder rod inserted through said central opening to continue raising process. Due to this, a drying portion of the workpiece is not held by a wet holding mechanism.Type: GrantFiled: November 7, 2007Date of Patent: September 4, 2012Assignee: Invenpro (M) SDN. BHD.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Publication number: 20110197931Abstract: The present invention relates to an apparatus (100) for washing a workpiece such as wafers, PC boards, hybrid circuits, precision mechanical or electromechanical components, optical instruments, medical devices or the like. Preferably, the apparatus (100) of the present invention can be used for washing disk drive components that have a substantially flat disc shape. The simple and easy to maintain structure of the present apparatus provides an uni-directional flow of washing liquid within the apparatus to remove contaminants from the surface of a workpiece in a submerged condition under streams of the washing liquid. The uni-directional flow of the washing liquid is achieved via a means which pumping a flow of washing liquid into the inlet and simultaneously extracting a flow of washing liquid out of the outlet of the apparatus (100). The uni-directional flow of the washing liquid is capable of preventing the removed contaminants from re-depositing onto the surface of the workpiece that has been cleaned.Type: ApplicationFiled: July 31, 2009Publication date: August 18, 2011Applicant: INVENPRO (M) SDN. BHD.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Publication number: 20100083984Abstract: An apparatus and method for cleaning workpieces (5) using two pairs of substantially vertical rotating roller brushes (15) at each brush station whereby rotation of said brushes (15) propel workpieces (5) from one brush station to the next. Workpieces (5) are held for a predetermined period of time at each station by edgewheels (30, 31) which also rotate the workpieces (5). Cleaning fluid is sprayed onto workpieces (5) as they rotate to assist in removing particulate contamination. Method involves inserting a single workpiece (5) in between two pairs of rotating roller brushes (15) which scrub said workpiece as it is rotated by a pair of edgewheels (30, 31). There may be a divider shield (9) in between each brush station to prevent a large proportion of particulate matter and used cleaning fluid from traveling between the brush stations.Type: ApplicationFiled: April 18, 2008Publication date: April 8, 2010Applicant: Invenpro (M) Sdn. BGhdInventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang
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Publication number: 20100031975Abstract: A method for drying workpieces includes immersing the workpieces in a liquid bath, raising the workpieces with a first holder until a central opening of the workpieces is visible above liquid surface, then using a dry second holder rod inserted through said central opening to continue raising process. Due to this, a drying portion of the workpiece is not held by a wet holding mechanism.Type: ApplicationFiled: November 7, 2007Publication date: February 11, 2010Applicant: Invenpro (M) Sdn. Bhd.Inventors: Kae Jeng Ng, Kien Hui Liang, Kien Yew Liang